Loom shuttle-body and method of making the same



. I. s. FRANKLIN. LOOM snumz BODY AND memoo or MAKING THE smz, APPLICATION. EILED JAN-.6. 1920, 1,372,131, Patented Mar; 22, 192-1. H's-.7. 4

UNITED STATESPATENT OFFICE.

IRA s. FRANKLIN, or nosron, MASSACHUSETTS.

LOOM SHUTTLE-BODY AND METEOD or MA ING'THE SAME.

Specification of Letters Patent. Pate t d I i 22 1921 Application filed January 6, 1920. Serial No. 349,739.

meaning the structure comprising the usual tapering end portions to which the metal beaks are applied, and in which openings are formed for various purposes, and the intermediate hollowed portion forming three sides of the usualspindle chamber.

The chief objections to a shuttle body carved from solid wood are, first, its liability to crack and split, and second, its ex pense. I overcome these and other objec tions by the improved construction and method hereinafter described and claimed.

Of the accompanying drawings forming a part of this specification,

Figure 1 is a top plan View of a shuttle body embodying the invention.

Fig. 2 is a section on line 22 of Fig. 1.

Fig. 3 is a section on line 3-3 of Fig. 1.

Fig. 4 is a section on line H of Fig. 1.

Fig. 5 is a plan View of one of the layers of the shell hereinafter described.

Fig. 6 is a longitudinal section, showing a plurality of layers assembled on a core to form the shell.

Fig. 7 is a section on line 7-7 of Fig. 6.

The same reference characters indicate the same parts in all of the figures.

In carrying out my invention, I cut from absorbent fibrous sheet material, preferably kraft paper, about one-thirty-second of an inch thick, a plurality of layers 12, preferably formed as shown by-Fig. 5, and treat these layers with a hard drying adhesive capable of penetrating the material ofthe layers, of firmly uniting the layers when they are assembled, and of solidifying by drying. and thus rendering the assembled layers hard and rigid. A suitable adhesive may be made as follows:

Dissolve in water one pound of casein and one and one-half ounces of borax. Then make a composition consisting of five and one-third ounces of formaldehyde 40 Baume, and eight ounces of ammonia 28 strength. 1 When this composition efl'ervesces it is added to the casein and borax composition, the whole being thoroughly mixed.

I next assemble a plurality of layers on a core having the general form of a shuttle body, and preferably composed of two end members 13, and an intermediatemember 1 1, the end members 13 being of tapering form, and constituting parts of the completed shuttle body. A r

The layers 12 are formed to extend continuously from end to end of said core, and their end portions are notched, as shown by Fig. 5, to form tongues adapted to conform to the external surfacesof the core members 13. When the adhesive is soft, the material of the layers 12 is permeated by the adhesive, so that the layers are soft and pulpy.

By applying suitable rubbing pressure to the meeting edges of the blank tongues while they are backed by the cores, the tongues are caused to merge into each other and form hollow shell endssurrounding the core members 13, and presenting no visible seams or joints. The longitudinal edges of the layers 12 are cut away to form recesses 15, so proportioned that the layers surround only three sides of the intermediate coremember 14:, as shown by Figs. 6 and 7, so that said core member, which may be made of material which is not adherent to the ad hesive, may be readily removed, the shell portion formed on the intermediate meming, the layers being firmly united to each other, forming a rigid shell, the end portions of which adhere firmly to the core members 13, said end portions and core members constituting solid shell ends which are adapted to be cut by woodworking tools to form the usual openings with which the end portions of a shuttle body are usually provided.

By reference to Figs. 1, 2, 3, and 1, which show the shuttle body ready for the usual finishing operations, it will be seen that the body has the usual tapering Solid end portions, formed by the core members 13, and the portions of the laminated shell surrounding the same, and an intermediate spindle chamber 16 of the usual general form, The inner end ofthe core members 13'form the opposite ends of the Spindle chamber, and their outer ends are formed to receive the usual metal beaks 18 shown by dotted lines in Fig. 2.

It will now be understood: that the shuttle body shown by Figs. 1 to 4, inclusive, is adapted to be treated like an ordinary shuttle body carvedfrom a block of wood, and is free fromliability to crack and split. I have found that the cost of manufacturing a shuttle body in accordance with my invention,iis considerably less than that of manufacturing a shuttle body from solid wood.

I claim '1. A shuttle body composed of spacedapart tapered end cores, a plurality of superimposedlayers of relativelythin absorbent -,paper, having notched and .tongned corecovering portions and. intermediate chamber wall-forming portions, and a hard-drying adhesive permeating said layers, the length of the sheets being substantially 7 equal to the distance between the outer ends of the cores, so that the inner ends of the cores and the intermediate portions of the sheets form the ends and longitudinal walls of a spindleehamber, the tongues of the core-covering portions being merged together and backed by the cores, so that the entire shell, including the core-covering portions, is seamless.

2. The hereinbefore described method of making a shuttle body, which consists in providing a plurality of layers of relatively thin absorbent paper with notched and tongued end portions, saturating said layers with a hard-drying adhesive, assembling said layers on a core which includes solid tapering end core portions to which said adhesive is adherent and which constitute parts of the shuttle body, and a removable intermediate core portion, which is non-adherent to the adhesive, the assembled layers forming a shell, which surrounds the said tapering end core portions and exposes a part of the intermediate core portion to form the bottom and two sides of an open spindle chamber, merging the edges of the tongues of said tongued sheet portions together by external pressure while the adhesive is soft and the tongues are backed by the end core portions, thus providing seamless end core-covering shell port-ions, allowing said adhesive to solidify, thus rendering the shell rigid and adherent to the end portions of the core, and removing the intermediate core portion, and thus exposing the bottom and sides of the spindle chamber.

In testimony whereof I have ailixed my signature.

IRA S. FRANKLIN. 

